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Metadata Files

Data Publication

Mechanical data of rotary shear experiments in bituminous dolostones

Chinello, Miriana | Aretusini, Stefano | Spagnuolo, Elena | Di Toro, Giulio

GFZ Data Services

(2025)

Descriptions

Mirror-like Surfaces (MSs) are ultra-polished fault surfaces widespread in carbonate seismic terrains, but their formation process is still debated. We deformed gouge samples from exposed fault surfaces hosted in bituminous dolostone rocks in a rotary shear apparatus (SHIVA) at seismic slip rates (1 m/s). By changing the water availability (water-pressurised and room-humidity conditions) and the organic matter/dolomite content (> 35%, dark gouge DG; < 30% bright gouge BG) we investigated the mechanical behaviour leading to MSs formation in fault gouges. We run tests at 15 MPa effective normal stress, 2 MPa confinement and 1 MPa pore pressure for the water-pressurised experiments and a total displacement of 0.13 m. Mirror-like fault surfaces were obtained in all successful experiments; mirrors were more developed under room-humidity conditions. Bituminous dolostones under room-humidity conditions had a slip neutral behaviour with a low friction (0.3). Bituminous dolostones under water-pressurised conditions showed a slip weakening behaviour with an initial peak effective friction μp = 0.65, followed by a drop to effective friction μss DG than in BG (i.e., μss of 0.25 vs 0.28). Future work will focus on the microstructural analysis of the experimental products and the investigation of the slip behaviour of bituminous dolostones at sub-seismic slip rates for a complete study of the slip behaviour spectra. This publication results from work conducted under the national open access action at SHIVA (Slow to High Velocity Apparatus) - HP-HT laboratory of experimental Volcanology and Geophysics (INGV, Roma 1 section) supported by WP3 ILGE - MEET project, PNRR - EU Next Generation Europe program, MUR grant number D53C22001400005.

Keywords


Originally assigned keywords
EPOS
multi-scale laboratories
rock and melt physical properties
Friction
Powder Mixture
Rotary Shear
Strain gauge
EARTH SCIENCE &gt; SOLID EARTH &gt; ROCKS/MINERALS/CRYSTALS &gt; SEDIMENTARY ROCKS
EARTH SCIENCE &gt; SOLID EARTH &gt; ROCKS/MINERALS/CRYSTALS &gt; SEDIMENTARY ROCKS &gt; SEDIMENTARY ROCK PHYSICAL/OPTICAL PROPERTIES
EARTH SCIENCE &gt; SOLID EARTH &gt; TECTONICS &gt; PLATE TECTONICS &gt; STRAIN

Corresponding MSL vocabulary keywords
friction coefficient
frictional deformation
friction coefficient
rotary shear apparatus
rotary shear apparatus

MSL enriched keywords
Measured property
friction - controlled slip rate
friction coefficient
Inferred deformation behavior
deformation behaviour
frictional deformation
Measured property
friction - controlled slip rate
friction coefficient
Apparatus
deformation testing
shear testing
rotary shear apparatus
Apparatus
characterization of modelling material
frictional property determination
rotary shear apparatus
sedimentary rock
dolomite
fault rock
fault gouge
minerals
carbonate minerals
dolomite
slip weakening parameters
pore fluid pressure
tectonic deformation structure
tectonic fault

MSL enriched sub domains i

rock and melt physics
analogue modelling of geologic processes

Source

https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=c598080b-3495-11f0-914a-f12b0080820d

Source publisher

GFZ Data Services


DOI

10.5880/fidgeo.2025.037


Creators

Chinello, Miriana

Università degli Studi di Padova, Padova, Italy

ORCID:

https://orcid.org/0009-0002-7244-7779

Aretusini, Stefano

Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy

ORCID:

https://orcid.org/0000-0001-7211-3838

Spagnuolo, Elena

Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy

ORCID:

https://orcid.org/0000-0002-1377-5812

Di Toro, Giulio

Università degli Studi di Padova, Padova, Italy

ORCID:

https://orcid.org/0000-0002-6618-3474


Contributors

Chinello, Miriana

DataCollector

Università degli Studi di Padova, Padova, Italy

ORCID:

https://orcid.org/0009-0002-7244-7779

Aretusini, Stefano

DataCollector

Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy

ORCID:

https://orcid.org/0000-0001-7211-3838

Spagnuolo, Elena

DataCollector

Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy

ORCID:

https://orcid.org/0000-0002-1377-5812

Di Toro, Giulio

Supervisor

Università degli Studi di Padova, Padova, Italy

ORCID:

https://orcid.org/0000-0002-6618-3474

ILGE TNA/NOA Network

Sponsor

MEET Project

Sponsor

Chinello, Miriana

ContactPerson

Università degli Studi di Padova, Padova, Italy

HP-HT Laboratory Of Experimental Volcanolgy And Geophysics (INGV, Rome, Italy)

HostingInstitution

INGV, Rome, Italy

labid:

3f145405812f5c7f69206bbd78b33a86

Chinello, Miriana

ContactPerson

Università degli Studi di Padova, Padova, Italy


References

https://hdl.handle.net/11577/3548294

10.1029/2023gc011063

10.1038/s41467-021-22805-w

10.1007/s12210-010-0097-x

10.1029/2006gl027931

10.1029/2010jb008181

10.1130/g33588.1

https://ilge.ct.ingv.it/

https://meet.ingv.it/


Citation

Chinello, M., Aretusini, S., Spagnuolo, E., & Di Toro, G. (2025). Mechanical data of rotary shear experiments in bituminous dolostones [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2025.037


Dates

Issued:

2025


Funding References

Funder name: Inquire Europe

Funder identifier: https://doi.org/10.13039/501100009333

Funder identifier type: Crossref Funder ID


Rights

Creative Commons Attribution 4.0 International


Geo location(s)

Study Area: Monte Camicia Thrust Zone, Central Apennines, Italy


Spatial coordinates